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      Libao-1.2.0
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      <h4>
        Beyond Linux<sup>�</sup> From Scratch <span class="phrase">(System
        V</span> Edition) - Version 2020-04-02
      </h4>
      <h3>
        Chapter&nbsp;42.&nbsp;Multimedia Libraries and Drivers
      </h3>
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    <div class="sect1" lang="en" xml:lang="en">
      <h1 class="sect1">
        <a id="libao" name="libao"></a>Libao-1.2.0
      </h1>
      <div class="package" lang="en" xml:lang="en">
        <h2 class="sect2">
          Introduction to Libao
        </h2>
        <p>
          The <span class="application">libao</span> package contains a
          cross-platform audio library. This is useful to output audio on a
          wide variety of platforms. It currently supports WAV files, OSS
          (Open Sound System), ESD (Enlighten Sound Daemon), ALSA (Advanced
          Linux Sound Architecture), NAS (Network Audio system), aRTS (analog
          Real-Time Synthesizer), and PulseAudio (next generation
          <span class="application">GNOME</span> sound architecture).
        </p>
        <p>
          This package is known to build and work properly using an LFS-9.1
          platform.
        </p>
        <h3>
          Package Information
        </h3>
        <div class="itemizedlist">
          <ul class="compact">
            <li class="listitem">
              <p>
                Download (HTTP): <a class="ulink" href=
                "https://downloads.xiph.org/releases/ao/libao-1.2.0.tar.gz">https://downloads.xiph.org/releases/ao/libao-1.2.0.tar.gz</a>
              </p>
            </li>
            <li class="listitem">
              <p>
                Download MD5 sum: 9f5dd20d7e95fd0dd72df5353829f097
              </p>
            </li>
            <li class="listitem">
              <p>
                Download size: 456 KB
              </p>
            </li>
            <li class="listitem">
              <p>
                Estimated disk space required: 3.9 MB
              </p>
            </li>
            <li class="listitem">
              <p>
                Estimated build time: less than 0.1 SBU
              </p>
            </li>
          </ul>
        </div>
        <h3>
          Libao Dependencies
        </h3>
        <h4>
          Optional
        </h4>
        <p class="optional">
          <a class="xref" href="../x/installing.html" title=
          "Chapter&nbsp;24.&nbsp;X Window System Environment">X Window
          System</a>, <a class="xref" href="alsa.html" title=
          "ALSA-1.2.2">ALSA-1.2.2</a>, and <a class="xref" href=
          "pulseaudio.html" title="PulseAudio-13.0">PulseAudio-13.0</a>
        </p>
        <p class="usernotes">
          User Notes: <a class="ulink" href=
          "http://wiki.linuxfromscratch.org/blfs/wiki/libao">http://wiki.linuxfromscratch.org/blfs/wiki/libao</a>
        </p>
      </div>
      <div class="installation" lang="en" xml:lang="en">
        <h2 class="sect2">
          Installation of Libao
        </h2>
        <p>
          Install <span class="application">libao</span> by running the
          following commands:
        </p>
        <pre class="userinput">
<kbd class="command">./configure --prefix=/usr &amp;&amp;
make</kbd>
</pre>
        <p>
          This package does not come with a test suite.
        </p>
        <p>
          Now, as the <code class="systemitem">root</code> user:
        </p>
        <pre class="root">
<kbd class="command">make install &amp;&amp;
install -v -m644 README /usr/share/doc/libao-1.2.0</kbd>
</pre>
      </div>
      <div class="configuration" lang="en" xml:lang="en">
        <h2 class="sect2">
          Configuring Libao
        </h2>
        <div class="sect3" lang="en" xml:lang="en">
          <h3 class="sect3">
            <a id="libao-config" name="libao-config"></a>
          </h3>
          <h4 class="title">
            <a id="libao-config" name="libao-config"></a>Config Files
          </h4>
          <p>
            <code class="filename">/etc/libao.conf</code> and <code class=
            "filename">~/.libao</code>
          </p>
        </div>
        <div class="sect3" lang="en" xml:lang="en">
          <h3 class="sect3"></h3>
          <h4 class="title">
            <a id="idm140006418018800" name=
            "idm140006418018800"></a>Configuration Information
          </h4>
          <p>
            Currently, the only configuration option available is setting the
            default output device. Issue <span class="command"><strong>man
            libao.conf</strong></span> for details.
          </p>
        </div>
      </div>
      <div class="content" lang="en" xml:lang="en">
        <h2 class="sect2">
          Contents
        </h2>
        <div class="segmentedlist">
          <div class="seglistitem">
            <div class="seg">
              <strong class="segtitle">Installed Programs:</strong>
              <span class="segbody">None</span>
            </div>
            <div class="seg">
              <strong class="segtitle">Installed Libraries:</strong>
              <span class="segbody">libao.so and plugins under
              /usr/lib/ao/plugins-4</span>
            </div>
            <div class="seg">
              <strong class="segtitle">Installed Directories:</strong>
              <span class="segbody">/usr/include/ao, /usr/lib/ao and
              /usr/share/doc/libao-1.2.0</span>
            </div>
          </div>
        </div>
        <div class="variablelist">
          <h3>
            Short Descriptions
          </h3>
          <table border="0" class="variablelist">
            <colgroup>
              <col align="left" valign="top" />
              <col />
            </colgroup>
            <tbody>
              <tr>
                <td>
                  <p>
                    <a id="libao-lib" name="libao-lib"></a><span class=
                    "term"><code class="filename">libao.so</code></span>
                  </p>
                </td>
                <td>
                  <p>
                    provides functions for programs wishing to output sound
                    over supported platforms.
                  </p>
                </td>
              </tr>
            </tbody>
          </table>
        </div>
      </div>
      <p class="updated">
        Last updated on 2020-03-09 10:02:12 -0500
      </p>
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